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Laser & Optoelectronics Progress, Volume. 60, Issue 19, 1906004(2023)

Visible Light Three-Dimensional Positioning System Based on Light-Emitting Diode and Image Sensor

Yongze Xu1,2,3 and Zhe Chen1,2,3,4、*
Author Affiliations
  • 1Engineering Research Center on Visible Light Communication of Guangdong Province, Department of Optoelectronic Engineering, College of Science & Engineering, Jinan University, Guangzhou 510632, Guangdong, China
  • 2Key Laboratory of Visible Light Communications of Guangzhou, Department of Optoelectronic Engineering, College of Science & Engineering, Jinan University, Guangzhou 510632, Guangdong, China
  • 3Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Department of Optoelectronic Engineering, College of Science & Engineering, Jinan University, Guangzhou 510632, Guangdong, China
  • 4Jihua Laboratory, Foshan 528251, Guangdong, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (14)
    Equations (21)
    References (26)
    Cited By (2)
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    Paper Information
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    Figures & Tables(14)
    Process of coordinate system conversion in pinhole imaging model

    Fig. 1. Process of coordinate system conversion in pinhole imaging model

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    Flow chart of proposed VLP system

    Fig. 2. Flow chart of proposed VLP system

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    Flow chart of stripe searching algorithm based on bisection and double pointers

    Fig. 3. Flow chart of stripe searching algorithm based on bisection and double pointers

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    Different sizes of stirpes at different distances. (a) Distance is 2 m; (b) distance is 3 m

    Fig. 4. Different sizes of stirpes at different distances. (a) Distance is 2 m; (b) distance is 3 m

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    Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in simulation experiments. (a) Whole positioning points; (b) height is 0; (c) height is 50 cm; (d) height is 100 cm

    Fig. 5. Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in simulation experiments. (a) Whole positioning points; (b) height is 0; (c) height is 50 cm; (d) height is 100 cm

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    Influence of bias error on positioning accuracy

    Fig. 6. Influence of bias error on positioning accuracy

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    Influence of angle error on positioning accuracy

    Fig. 7. Influence of angle error on positioning accuracy

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    Experimental environment and equipment. (a) Experimental environment; (b) LED; (c) positioning device; (d) retractable poles

    Fig. 8. Experimental environment and equipment. (a) Experimental environment; (b) LED; (c) positioning device; (d) retractable poles

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    Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in physical experiments. (a) Whole positioning points; (b) height is 0; (c) height is 50 cm; (d) height is 100 cm

    Fig. 9. Three-dimensional distributions of real coordinates and calculated coordinates of positioning points in physical experiments. (a) Whole positioning points; (b) height is 0; (c) height is 50 cm; (d) height is 100 cm

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    Positioning error distribution maps at different heights. (a) Height is 0; (b) height is 50 cm; (c) height is 100 cm

    Fig. 10. Positioning error distribution maps at different heights. (a) Height is 0; (b) height is 50 cm; (c) height is 100 cm

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    CDF of positioning error

    Fig. 11. CDF of positioning error

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    Stripe searching time of different algorithms

    Fig. 12. Stripe searching time of different algorithms

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    • Table 1. Parameters of experiments

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      Table 1. Parameters of experiments

      LED
      ModelDELIXISI RT-TD251
      Power /W18
      Diameter /cm18
      Image sensor
      ModelOmniVision OV2640
      Image size /pixel1600×1200
      Focal length /mm3.6
      Sensor size /mm6.35
      Coefficients of radial distortionk1=0.2011，k2=0.7885，k3=0
      Coefficients of centrifugal distortionp1=0.0019，p2=0.0012
      Field of view /（°）65
      Positioning device
      CPUIngenic X1500，single core，1 GHz
      Power /W0.54
      Parameters of positioning
      Positioning size100 cm×100 cm×300 cm
      Number of positioning points7×7×3
      Coordinates of LEDs /cmL1 （-30，0，300），L2 （30，0，300）

    • Table 2. Stripe search time and comparative analysis of different algorithms

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      Table 2. Stripe search time and comparative analysis of different algorithms

      Stripe searching timeAllHeight /cmArea
      050100LeftMiddleRight
      Bisection /μs638.92525.05631.00760.71621.00642.19653.57
      Linear /μs2134.351989.242097.102316.712154.332129.432119.29
      Improved in percentage /%70.0673.6169.9167.1671.1769.8469.16
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    Yongze Xu, Zhe Chen. Visible Light Three-Dimensional Positioning System Based on Light-Emitting Diode and Image Sensor[J]. Laser & Optoelectronics Progress, 2023, 60(19): 1906004

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: May. 19, 2022

    Accepted: Jun. 13, 2022

    Published Online: Sep. 25, 2023

    The Author Email: Zhe Chen (thzhechen@163.com)

    DOI:10.3788/LOP221643

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology